/*********************************************************************************
 * Software License Agreement (BSD License)
 * Copyright (c) 2012, Carlos D. Correa (info@ngraph.org)
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of netzen nor the
 *    names of its contributors may be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 *  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *********************************************************************************/
#ifndef SIMPLEGRAPHVIEW_H
#define SIMPLEGRAPHVIEW_H

#include "view.h"
#include "graph.h"
#include "layout.h"
#include "controller.h"


class SimpleGraphView: public View {
protected:
	int selectedNode;
	// Geometry
	float *vertices;
	float *colors;
	float *silhouetteColors;
	float *edgeVertices;
	float *edgeColors;
	int *indices;
	int numVertices;
	int numIndices;

	bool validGeometry;
	bool validColors;
	bool validIndices;
	bool layoutChanged;
	// Layout
	Layout *layout;
	// Labels.
	// Move into a different module : LabelManager. To be done.
	vector<Label *> labels;
	vector<Label *> visibleLabels;
	
protected:
	virtual void allocateNodeGeometry(int n);
	virtual void allocateEdgeGeometry(int n);
	virtual void createNodeGeometry();
	virtual void createEdgeGeometry();
	virtual void updateNodeColors();
	virtual void updateEdgeColors();
	
	virtual void initGraphics();
	virtual void drawNodeGeometry();
	virtual void drawEdgeGeometry();
	virtual void drawLabels();
	
	virtual void addLabel(Label *label, int importance); // Feed into automatic labeling system. To be done.
	virtual void getNodeLocation(int i, float &x, float &y);
	virtual void setNodeLocation(int i, float x, float y);
public:
	void invalidateGeometry();
	void invalidateColors();
	void invalidateIndices();
	void colorUpdated();
	void layoutUpdated();
	
	SimpleGraphView(const char *title);
	virtual ~SimpleGraphView();
	virtual void render();
	virtual void setGraph(Graph *g);

	// Inherited view methods
	virtual void click(float px, float py, int modifiers);
	virtual void release(float px, float py, int modifiers);
	virtual void drag(float px, float py, float dx, float dy, int modifiers);
	virtual void update(string property);
	virtual void tic();
	
	bool pickNode(float x, float y) ;
};

View *createSimpleGraphView(string name);


#endif
